Question

把下面等式改写为比例式：①18 × 3 =6 × 9 2② 0.4 × 7.5 =2.5 × 1.2 。【各写出4个】

是数学6年级下册的《同步练习》里的！！！~

Answer 1

你好：

①18 × 3 =6 × 9
18:6=9:3
6:18=3:9
18:9=6:3
9:18=3:6

② 0.4 × 7.5 =2.5 × 1.2
0.4:2.5=1.2:7.5
2.5:0.4=7.5:1.2
0.4:1.2=2.5:7.5
1.2:0.4=7.5:2.5

Answer 2

①18 × 3 =6 × 9
18:9=6:3
9:18=3:6
18:6=9:3
6:18=3:9

② 0.4 × 7.5 =2.5 × 1.2
0.4:1.2=2.5:7.5
1.2:0.4=7.5:2.5
7.5:1.2=2.5:0.4
1.2:7.5=0.4:2.5

Answer 3

18:6=9:3
18:9=6:3
3:6=9:18
3:9=6:18

0.4:2.5=1.2:7.5
0.4:1.2=2.5:7.5
7.5:2.5=1.2:0.4
7.5:1.2=2.5:0.4